Process for obtaining an ethane-rich fraction for refilling an e

Details Process for obtaining an ethane-rich fraction for refilling an e Process for obtaining an ethane-rich fraction for refilling an e

1995-11-09

1996-12-31

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Liquefaction

62623, F25J 300

Patent

active

055883060

ABSTRACT:
An ethane-rich fraction for refilling the refrigerant circuit, using an ethane-containing refrigerant in a process for liquefaction of a hydrocarbon-rich fraction, is obtained by removing a partial flow of liquefied hydrocarbon-rich fraction and supplying same to a C.sub.1 /C.sub.2 /C.sub.3+ separation column. Roughly in the middle of this C.sub.1 /C.sub.2 /C.sub.3+ separation column, an ethane-rich fraction is withdrawn and, optionally after intermediate storage in a buffer tank, is added to the ethane-containing refrigerant.

REFERENCES:
patent: 3524897 (1970-08-01), Kniel
patent: 3721099 (1973-03-01), Forg et al.
patent: 4229195 (1980-10-01), Forg
patent: 4230469 (1980-10-01), Grimm et al.

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